Abstract: The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.

Abstract: An optical glass is provided that includes a refractive index (nd) of no less than 1.75 and an Abbe number (vd) of no less than 10 as optical constants. A Bi2O3 content is no less than 10% by weight to no more than 80% by weight. The content of SiO2 is lower than the content of B2O3. The total content of SiO2+B2O3 is from no less than 1% by weight to no more than 60% by weight. The content of RO is from no less than 0.1% by weight to no more than 50% by weight. R represents one or more elements selected from the group consisting of Zn, Ba, Sr, Ca, and Mg. The optical glass has at least one of the properties of being substantially free from opacification and/or being substantially devitrified within the glass body under the conditions of a reheating testing.

Abstract: Provided is optical glass that does not contain lead, which is an environmental pollutant. The optical glass is ideal for the transmission of light even after being exposed to X-rays, and has a high refractive index. The optical glass comprises, by mass% in terms of oxide versus the glass total mass, 1.0% to 60.0% of an SiO2 component, and one or more selected from the group consisting of an La2O3 component, ZrO2 component, TiO2 component, Nb2O5 component, and Ta2O5 as essential components. The optical glass has a refractive index (nd) of 1.50 or greater, and has a light intensity recovery rate of 45% or greater when the glass having been irradiated with X-rays with a dose of 2.5 Gy is irradiated with light of a xenon lamp for 11 hours.

Abstract: The present invention provides optical glasses containing Bi2O3 in which the optical glasses have at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body during reheating steps in production processes, superior chemical durability, and free from black coloring. The optical glass has a refractive index (nd) of no less than 1.75 and an Abbe number (?d) of no less than 10 as optical constants. The optical glass contains Bi2O3 in a content from no less than 10% by weight to less than 90% by weight, and has at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body under the conditions of a reheating test (a).

Abstract: There is provided an optical glass with a high refractive index and a low dispersion having a refractive index (nd) of not less than 1.75 and an Abbe's number (?d) of not less than 35 where the image formation characteristic is hardly affected by changes in temperature of the using environment. SiO2, B2O3 and La2O3 are contained as essential components and the ratio of the constituting components are adjusted whereby an optical glass in which a product of ? and ? where ? is an average linear expansion coefficient at ?30 to +70° C. and ? is an optical elasticity constant at the wavelength of 546.1 nm is not more than 130×10?12° C.?1×nm×cm?1×Pa?1 is able to be achieved.

Abstract: There is provided an optical glass with a high refractive index and a low dispersion having a refractive index (nd) of not less than 1.75 and an Abbe's number (?d) of not less than 35 where the image formation characteristic is hardly affected by changes in temperature of the using environment. SiO2, B2O3 and La2O3 are contained as essential components and the ratio of the constituting components are adjusted whereby an optical glass in which a product of ? and ? where ? is an average linear expansion coefficient at ?30 to +70° C. and ? is an optical elasticity constant at the wavelength of 546.1 nm is not more than 130×10?12° C.?1×nm×cm?1×Pa?1 is able to be achieved.

Abstract: An optical glass has a refractive index (nd) of 1.60 or over and excellent transmittance and internal quality. The optical glass comprises 0.1-4 mass % of Ta2O5 to total mass of glass calculated on oxide basis, has ratio of 0.95<Ta2O5/(Ta2O5+(ZrO2)+TiO2+Nb2O5+WO3)×5)?1.00, and further comprises SiO2+B2O3+Al2O3+BaO in a total amount of 81% or over.

Abstract: The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.

Abstract: Provided is an optical glass having high refractivity and high dispersibility, having good moldability in precision pressing, and having high transmittance and good internal quality, of which the transmittance reduction with time is prevented. The optical glass has a Pt content of at most 1.5 ppm, and is characterized in that, when a sample of the glass polished on both surfaces and having a thickness of 10 mm is irradiated with UV and/or visible light at a light-receiving energy of at most 0.4 mW·cm?2 for at least 200 hours, then the difference in the internal transmittance to light having a wavelength of 420 nm, before and after the irradiation (before irradiation—after irradiation) of the sample, as calculated in terms of the sample having a thickness of 10 mm, is at most 0.1.

Abstract: The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.

Abstract: The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.

Abstract: An optical glass is provided that includes a refractive index (nd) of no less than 1.75 and an Abbe number (vd) of no less than 10 as optical constants. A Bi2O3 content is no less than 10% by weight to no more than 80% by weight. The content of SiO2 is lower than the content of B2O3. The total content of SiO2+B2O3 is from no less than 1% by weight to no more than 60% by weight. The content of RO is from no less than 0.1% by weight to no more than 50% by weight. R represents one or more elements selected from the group consisting of Zn, Ba, Sr, Ca, and Mg. The optical glass has at least one of the properties of being substantially free from opacification and/or being substantially devitrified within the glass body under the conditions of a reheating testing.

Abstract: There is provided an optical glass with a high refractive index and a low dispersion having a refractive index (nd) of not less than 1.75 and an Abbe's number (?d) of not less than 35 where the image formation characteristic is hardly affected by changes in temperature of the using environment. SiO2, B2O3 and La2O3 are contained as essential components and the ratio of the constituting components are adjusted whereby an optical glass in which a product of ? and ? where ? is an average linear expansion coefficient at ?30 to +70° C. and ? is an optical elasticity constant at the wavelength of 546.1 nm is not more than 130×10?12° C.?1×nm×cm?1×Pa?1 is able to be achieved.

Abstract: A high-refractive index, low-dispersion optical glass which is small in a change of imaging properties due to a change in temperature of the use environment, specifically one capable of realizing an absolute value of multiplication (?×?) of an average coefficient of linear expansion (?) at from ?30 to +70° C. and a photoelastic constant (?) at a wavelength of 546.1 nm of not more than 130×10?12° C.?1×nm×cm?1×Pa?1, is manufactured without using large qualities of components which are high in an environmental load and scarce mineral resources. The optical glass of the invention has an absolute value of multiplication (?×?) of an average coefficient of linear expansion (?) at from ?30 to +70° C. and a photoelastic constant (?) at a wavelength of 546.1 nm of not more than 130×10?12° C.?1×nm×cm?1×Pa?1; and contains more than 0% of SiO2, B2O3 and La2O3, more than 13% and less than 20% of (ZrO2+Nb2O5) and less than 2.0% of ZnO in terms of % by mass on the oxide basis.

Abstract: The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.

Abstract: An optical glass has a refractive index (nd) of 1.60 or over and excellent transmittance and internal quality. The optical glass comprises 0.1-4 mass % of Ta2O5 to total mass of glass calculated on oxide basis, has ratio of 0.95<Ta2O5/(Ta2O5+(ZrO2)+TiO2+Nb2O5+WO3)×5)?1.00, and further comprises SiO2+B2O3+Al2O3+BaO in a total amount of 81% or over.

Abstract: The present invention provides optical glasses containing Bi2O3 in which the optical glasses have at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body during reheating steps in production processes, superior chemical durability, and free from black coloring. The optical glass has a refractive index (nd) of no less than 1.75 and an Abbe number (?d) of no less than 10 as optical constants. The optical glass contains Bi2O3 in a content from no less than 10% by weight to less than 90% by weight, and has at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body under the conditions of a reheating test (a).

Abstract: Provided is an optical glass having high refractivity and high dispersibility, having good moldability in precision pressing, and having high transmittance and good internal quality, of which the transmittance reduction with time is prevented. The optical glass has a Pt content of at most 1.5 ppm, and is characterized in that, when a sample of the glass polished on both surfaces and having a thickness of 10 mm is irradiated with UV and/or visible light at a light-receiving energy of at most 0.4 mW·cm?2 for at least 200 hours, then the difference in the internal transmittance to light having a wavelength of 420 nm, before and after the irradiation (before irradiation—after irradiation) of the sample, as calculated in terms of the sample having a thickness of 10 mm, is at most 0.1.

Abstract: The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.

Abstract: An optical glass comprises, in mass percent, 15–35% of P2O5, 40–60% of Nb2O5, 0.5% to less than 15% of Na2O and 3% to less than 25% of BaO, has a ratio in mass % of (BaO+Nb2O5)/{(TiO2+WO3)×3+Bi2O3+Nb2O5}>1.0; is free of Pb and As; and has a refractive index (nd) within a range from 1.78 to 1.90 and an Abbe number (?d) within a range from 18 to 27.